Arrangement comprising an object made at least partially of metal or precious metal and an RFID identification device

• US 9,024,763 B2
• Filed: 02/03/2007
• Issued: 05/05/2015
• Est. Priority Date: 03/03/2006
• Status: Expired due to Fees

• Current Assignee: Soheil Hamedani
• Original Assignee: Soheil Hamedani
• Inventors: Hamedani, Soheil
• Primary Examiner(s): Bugg, George
• Assistant Examiner(s): Afrifa-Kyei, Anthony D
• Application Number:
  US12/224,390
• Publication Number:
  US 20090015431A1
• Time in Patent Office: 3,013 Days
• Field of Search: 340/825.49, 340/572.1, 340/572.6, 340/572.7, 340/572.8
• US Class Current: 340/572.7
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object

Abstract

The invention relates to an arrangement including an object made at least partially of metal and/or precious metal and an RFID system, wherein the object and the RFID system are connected to one another in such a way that the transponder and the aerial of the RFID system are applied on a site of the object, on its surface, which is facing or can be caused to face an assigned reading device or are embedded into its surface in the form of an inlay, and means are provided which shield or attenuate the electrically conductive surface of the object against eddy currents induced in the conductor loop. Furthermore, the invention relates to a method for tracking and position-fixing objects of all kinds, which are made at least partially of metal and/or precious metal or are plated therewith, and into which a position-fixing device operating according to RFID technology is integrated. A transponder and, spaced apart from the latter, an aerial coupled with a reading device are disposed in or on the object at an application-specific conductive site and the transponder is shielded with respect to the conductive surface.

Claims

1. An arrangement comprising an object made at least partially of metal or precious metal comprising an electrically-conductive metallic surface having a top surface side and an RFID transponder for receiving energy from a reading device comprising a chip and an aerial structure, the chip and aerial structure are connected to one another and are directly embedded onto a substrate layer of the RFID transponder, wherein the substrate layer of the RFID transponder is directly integrated into the top surface side of the electrically-conductive metallic of the object made at least partially of metal or precious metal thereby enabling the RFID transponder to receive the energy from the reading device, wherein the RFID transponder is directly placed into a recess on the top surface side of the electrically-conductive metallic surface of the object and is disposed flush with the top surface side of the electrically-conductive metallic surface of the object made at least partially of metal or precious metal, wherein the substrate layer comprises a plurality of fixed, highly permeable ferromagnetic particles in a region of a spatial extension of the aerial structure of the RFID transponder on a top surface facing the electrically-conductive metallic surface, where the plurality of fixed, highly permeable ferromagnetic particles are oriented in such a way, that after being fixed-on a top surface of the substrate layer, the plurality of fixed, highly permeable ferromagnetic particles lie parallel to a magnetic field induced in the aerial structure of the RFID transponder and thereby suppress eddy currents, which occur when the RFID transponder is introduced into the magnetic field induced by a the corresponding reading device and wherein disposed between the highly permeable ferromagnetic particles are free spaces, which act as air gaps and wherein the substrate layer is a highly permeable material and wherein the object is an access card, a chip card or a card made of precious metal with RFID technology.

2. The arrangement according to claim 1, wherein the object is a work of art or made of metal or precious metal with RFID technology.

4. The arrangement according to claim 1, wherein the substrate layer comprises a reflector.

5. The arrangement according to claim 1, wherein the aerial structure is a conductor loop in the form of a UHF aerial, which is configured as a dipole, or an HF aerial, and which is configured as an induction loop.

3. An arrangement comprising an object made at least partially of metal or precious metal comprising an electrically-conductive metallic surface having a top surface side and an RFID transponder for receiving energy from a reading device comprising a chip and an aerial structure, the chip and aerial structure are connected to one another and are directly embedded onto a substrate layer of the RFID transponder, wherein the substrate layer of the RFID transponder is directly integrated into the top surface side of the electrically-conductive metallic of the object made at least partially of metal or precious metal thereby enabling the RFID transponder to receive the energy from the reading device, wherein the RFID transponder is directly placed into a recess on the top surface side of the electrically-conductive metallic surface of the object and is disposed flush with the top surface side of the electrically-conductive metallic surface of the object made at least partially of metal or precious metal, wherein the substrate layer comprises a plurality of fixed, highly permeable ferromagnetic particles in a region of a spatial extension of the aerial structure of the RFID transponder on a top surface facing the electrically-conductive metallic surface, where the plurality of fixed, highly permeable ferromagnetic particles are oriented in such a way, that after being fixed-on a top surface of the substrate layer, the plurality of fixed, highly permeable ferromagnetic particles lie parallel to a magnetic field induced in the aerial structure of the RFID transponder and thereby suppress eddy currents, which occur when the RFID transponder is introduced into the magnetic field induced by a the corresponding reading device and wherein disposed between the highly permeable ferromagnetic particles are free spaces, which act as air gaps and wherein the substrate layer is a highly permeable material, wherein the object made of precious metal is set with at least one diamond, which terminates flush with the surface and which represents a marking site of the object.

7. The arrangement according to claim 3, wherein the substrate layer comprises a reflector.

8. The arrangement according to claim 3, wherein the aerial structure is a conductor loop in the form of a UHF aerial, which is configured as a dipole, or an HF aerial, and which is configured as an induction loop.

9. The arrangement according to claim 3, wherein the object is a work of art or made of metal or precious metal with RFID technology.

6. An arrangement comprising an object made at least partially of metal or precious metal comprising an electrically-conductive metallic surface having a top surface side and an RFID transponder for receiving energy from a reading device comprising a chip and an aerial structure, the chip and aerial structure are connected to one another and are directly embedded onto a substrate layer of the RFID transponder, wherein the substrate layer of the RFID transponder is directly integrated into the top surface side of the electrically-conductive metallic of the object made at least partially of metal or precious metal thereby enabling the RFID transponder to receive the energy from the reading device, wherein the RFID transponder is directly placed into a recess on the top surface side of the electrically-conductive metallic surface of the object and is disposed flush with the top surface side of the electrically-conductive metallic surface of the object made at least partially of metal or precious metal, wherein the substrate layer comprises a plurality of fixed, highly permeable ferromagnetic particles in a region of a spatial extension of the aerial structure of the RFID transponder on a top surface facing the electrically-conductive metallic surface, where the plurality of fixed, highly permeable ferromagnetic particles are oriented in such a way, that after being fixed-on a top surface of the substrate layer, the plurality of fixed, highly permeable ferromagnetic particles lie parallel to a magnetic field induced in the aerial structure of the RFID transponder and thereby suppress eddy currents, which occur when the RFID transponder is introduced into the magnetic field induced by a the corresponding reading device and wherein disposed between the highly permeable ferromagnetic particles are free spaces, which act as air gaps and wherein the substrate layer is a highly permeable material, wherein the aerial structure is a conductor loop so that radiation emitted by the aerial structure is bundled.

10. The arrangement according to claim 6, wherein the substrate layer comprises a reflector.

11. The arrangement according to claim 6, wherein the aerial structure is a conductor loop in the form of a UHF aerial, which is configured as a dipole, or an HF aerial, and which is configured as an induction loop.

12. The arrangement according to claim 6, wherein the object is a work of art or made of metal or precious metal with RFID technology.